The only real problem with the MVP is it too becomes a throw away after 300-500 charge cycles. For that reason alone I feel that the sooner a person switches to replacable battery systems the better off they are.
Type "worlds most dangerous battery" into your search engine, and see what comes up. The MVP uses a LiPo cell. Even with the MVP's great safety features, it's still a LiPo battery.
I like being able to choose to use 'safe chemesty' (LiMn) IMR batteries in my PV's.
I had my heart set on the MVP but I have to say this is something I must consider for sure.....excellent excellent advice. I may just go with the....what is it.....IMR battery in the Vamo?